CN110684424A - Anticorrosive lubricating coating for dissimilar metal connecting piece for metal composite structure - Google Patents
Anticorrosive lubricating coating for dissimilar metal connecting piece for metal composite structure Download PDFInfo
- Publication number
- CN110684424A CN110684424A CN201810727942.8A CN201810727942A CN110684424A CN 110684424 A CN110684424 A CN 110684424A CN 201810727942 A CN201810727942 A CN 201810727942A CN 110684424 A CN110684424 A CN 110684424A
- Authority
- CN
- China
- Prior art keywords
- parts
- composite structure
- lubricating coating
- metal composite
- corrosion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
- C09D161/04—Condensation polymers of aldehydes or ketones with phenols only
- C09D161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3009—Sulfides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to an anti-corrosion lubricating coating for a dissimilar metal connecting piece for a metal composite structure. The material components and the parts by weight of the components are as follows: 2000-4000 parts of molybdenum disulfide, 0-180 parts of strontium chromate, 2000-6000 parts of heat-resistant phenolic resin, 4000-5000 parts of ethylene glycol ethyl ether acetate, 0-200 parts of polytetrafluoroethylene, 30-50 parts of bentonite, 100-150 parts of polyamide wax liquid modifier and 10-30 parts of leveling additive. The anticorrosive lubricating coating for the dissimilar metal connecting piece for the metal composite structure is suitable for surface anticorrosive treatment of dissimilar metal connecting pieces for metal composite structures such as aluminum alloy, titanium alloy and the like, and has high temperature resistance, paint remover resistance and self-lubricating property.
Description
Technical Field
The invention relates to the technical field of anticorrosive lubricating coatings, in particular to an anticorrosive lubricating coating for a dissimilar metal connecting piece for a metal composite structure.
Background
The fastener made of stainless steel, aluminum alloy and titanium alloy materials has the excellent comprehensive properties of large specific strength, fatigue resistance, corrosion resistance and the like, and is widely applied to connecting pieces of high-end metal structures in the fields of aviation, rail transportation and the like, such as a high-alloying alloy steel composite structure of a magnetic suspension rail system. The anticorrosive paint for stainless steel, aluminum alloy and titanium alloy fasteners, which is resistant to galvanic corrosion, has special requirements on the assembly process in many fields. The connecting pieces such as fasteners and the like for the aviation industry realize mechanical assembly, and can still be disassembled without generating an aging locking phenomenon after being used for a long time, so that the coated connecting pieces are required to have good lubricating property for a long time.
The invention mainly solves the problems of galvanic corrosion prevention between dissimilar metals and maintenance of good long-term lubricating performance of stainless steel, aluminum alloy and titanium alloy connecting pieces, such as titanium alloy fasteners, titanium alloy rivets and the like, for composite structures of aluminum alloy, nickel alloy, high-alloying alloy steel and the like under the working condition of connecting the composite structures of aluminum alloy, nickel-based alloy, high-alloying alloy steel and the like.
The locking phenomenon of the fastener often occurs on fasteners made of stainless steel, aluminum alloy and titanium alloy materials, and the metal alloys have corrosion resistance and can generate a thin oxidation layer on the surface of the metal to prevent further corrosion when the surface is damaged. When the fastener is locked, the oxide layer is damaged by the pressure and heat generated between the threads, so that the metal threads are blocked or sheared, and then adhesion occurs. When this continues, the fastener will be completely locked and cannot be disassembled.
When stainless steel, aluminum alloy and titanium alloy connecting pieces are assembled in structures of aluminum alloy, nickel alloy, high-alloying alloy steel and the like, in order to prevent the locking of the fastening pieces, external lubricants such as butter, molybdenum disulfide, mica, graphite, talcum powder or cetyl alcohol are generally adopted to lubricate the fastening pieces. But the tolerance requirement is high, and the riveting of a closed container adopts external lubricants such as butter, molybdenum disulfide, mica, graphite, talcum powder or cetyl alcohol, and the like, and can be air-dried, fall off or volatilize in the long-term use process, so that a gap is generated in a riveting structure. Therefore, the conventional external lubricant method is not suitable for the riveting of the closed container with high tolerance requirement.
Disclosure of Invention
The invention aims to solve the problems and provides an anti-corrosion lubricating coating for a dissimilar metal connecting piece for a metal composite structure, which adopts a method of an ultra-thin coating of the anti-corrosion lubricating coating, not only solves the problem of galvanic corrosion prevention between dissimilar metals, but also maintains good long-term lubricating performance.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the corrosion-resistant lubricating coating for the dissimilar metal connecting piece for the metal composite structure is characterized by comprising the following material components in parts by weight: 2000-4000 parts of molybdenum disulfide, 0-180 parts of strontium chromate, 2000-6000 parts of heat-resistant phenolic resin, 4000-5000 parts of ethylene glycol ethyl ether acetate, 0-200 parts of polytetrafluoroethylene, 30-50 parts of bentonite, 100-150 parts of polyamide wax liquid modifier and 10-30 parts of leveling additive.
Further, the molybdenum disulfide is 1000-mesh powder molybdenum disulfide.
Further, the strontium chromate is industrial pigment grade strontium chromate powder, and the fineness is not less than 600 meshes.
Further, the heat-resistant phenolic resin is No. II heat-resistant phenolic resin, 284 phenolic resin or 881 phenolic resin.
Further, the ethylene glycol monoethyl ether acetate is industrial-grade CAC111-15-9 ethylene glycol monoethyl ether acetate.
Further, the polytetrafluoroethylene is LUB5 polytetrafluoroethylene.
Further, the bentonite is MP100 organic bentonite.
Further, the polyamide wax liquid change assistant is 229 wax liquid change assistant or polyethylene wax liquid change assistant.
Further, the leveling auxiliary agent is a 3270 leveling agent or an HX-3310 leveling agent.
The working principle of the invention is as follows:
the molybdenum disulfide increases the self-lubricating properties of the coating.
And the recrystallization precipitation form of the strontium chromate after the coating is solidified realizes the enhancement of the coating strength of the coating.
The heat-resistant phenolic resin is used as a coating carrier, has wide compatibility and crosslinking property on organic and inorganic fillers, has high-temperature resistance, and improves the coating performance and the temperature resistance of a coating.
The ethylene glycol monoethyl ether acetate is used as a coalescing agent of the coating, and a film is slowly formed in the high-temperature curing process, so that the compactness of the coating is ensured.
The polytetrafluoroethylene improves the temperature resistance of the coating, so that the coating can keep the effectiveness at 200-50 ℃, and the corrosion resistance and the lubricating property of the coating are improved.
The organic bentonite forms gel in liquid resin, and has good thickening property, thixotropy, suspension stability, high-temperature stability, lubricity, film forming property, water resistance and chemical stability.
The polyamide wax liquid transformation assistant migrates on the surface in the curing process of the coating, and is separated out by recrystallization, so that the wear resistance and the lubricating property of the coating are improved.
The leveling auxiliary agent can reduce the surface tension of the coating, increase the wetting property and improve the leveling effect during coating.
The anti-corrosion lubricating coating provided by the invention has the following curing process parameters: curing at 180-240 deg.c for 30-60 min.
Compared with the prior art, the invention has the following beneficial effects:
the anticorrosive lubricating coating for the dissimilar metal connecting piece for the metal composite structure is suitable for surface anticorrosive treatment of dissimilar metal connecting pieces for metal composite structures such as aluminum alloy, titanium alloy and the like, is particularly suitable for anticorrosive lubrication of riveting positions of closed containers with high tolerance requirements, and has high temperature resistance, paint remover resistance and self-lubricating property. The method of adopting the ultra-thin coating of the anti-corrosion lubricating coating not only solves the problem of preventing galvanic corrosion between dissimilar metals, but also maintains good long-term lubricating performance.
Detailed Description
The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more readily understand the advantages and features of the present invention and to clearly and unequivocally define the scope of the present invention.
The first embodiment is as follows:
the corrosion-resistant lubricating coating for the dissimilar metal connecting piece for the metal composite structure is characterized by comprising the following material components in parts by weight: 2000 parts of molybdenum disulfide, 6000 parts of heat-resistant phenolic resin, 4000 parts of ethylene glycol monoethyl ether acetate, 50 parts of bentonite, 150 parts of polyamide wax liquid change assistant and 10 parts of leveling assistant.
The molybdenum disulfide is 1000 mesh powder molybdenum disulfide, the heat-resistant phenolic resin is No. II heat-resistant phenolic resin, the ethylene glycol ethyl ether acetate is industrial grade CAC111-15-9 ethylene glycol ethyl ether acetate, the bentonite is MP100 organic bentonite, the polyamide wax liquid variable auxiliary agent is 229 wax liquid variable auxiliary agent, and the leveling auxiliary agent is 3270 leveling agent.
The second embodiment is as follows:
the corrosion-resistant lubricating coating for the dissimilar metal connecting piece for the metal composite structure is characterized by comprising the following material components in parts by weight: 4000 parts of molybdenum disulfide, 10 parts of strontium chromate, 2000 parts of heat-resistant phenolic resin, 5000 parts of ethylene glycol ethyl ether acetate, 100 parts of polytetrafluoroethylene, 30 parts of bentonite, 100 parts of polyamide wax liquid change additive and 30 parts of leveling additive.
The molybdenum disulfide is 1000 meshes of powder molybdenum disulfide, strontium chromate is industrial pigment grade strontium chromate powder, the fineness is not lower than 700 meshes, the heat-resistant phenolic resin is 284 phenolic resin, the ethylene glycol ethyl ether acetate is industrial grade CAC111-15-9 ethylene glycol ethyl ether acetate, the polytetrafluoroethylene is LUB5 polytetrafluoroethylene, the bentonite is MP100 organic bentonite, the polyamide wax liquid variable additive is polyethylene wax liquid variable additive, and the leveling additive is a HX-3310 leveling agent.
The third concrete embodiment:
the corrosion-resistant lubricating coating for the dissimilar metal connecting piece for the metal composite structure is characterized by comprising the following material components in parts by weight: 3000 parts of molybdenum disulfide, 180 parts of strontium chromate, 4000 parts of heat-resistant phenolic resin, 4000 parts of ethylene glycol monoethyl ether acetate, 200 parts of polytetrafluoroethylene, 40 parts of bentonite, 100 parts of polyamide wax liquid change additive and 20 parts of leveling additive.
The molybdenum disulfide is 1000 meshes of powder molybdenum disulfide, strontium chromate is industrial pigment grade strontium chromate powder, the fineness is 800 meshes, heat-resistant phenolic resin is 881 phenolic resin, ethylene glycol ethyl ether acetate is industrial grade CAC111-15-9 ethylene glycol ethyl ether acetate, polytetrafluoroethylene is LUB5 polytetrafluoroethylene, bentonite is MP100 organobentonite, polyamide wax liquid variable auxiliary agent is polyethylene wax liquid variable auxiliary agent, the leveling auxiliary agent is 3270 flatting agent.
The fourth concrete embodiment:
the corrosion-resistant lubricating coating for the dissimilar metal connecting piece for the metal composite structure is characterized by comprising the following material components in parts by weight: 3000 parts of molybdenum disulfide, 180 parts of strontium chromate, 2500 parts of heat-resistant phenolic resin, 4500 parts of ethylene glycol monoethyl ether acetate, 180 parts of polytetrafluoroethylene, 40 parts of bentonite, 150 parts of polyamide wax liquid change assistant and 20 parts of leveling assistant.
The modified polyester resin is characterized in that the molybdenum disulfide is 1000-mesh powder molybdenum disulfide, the strontium chromate is industrial pigment-grade strontium chromate powder, the fineness is 800 meshes, the heat-resistant phenolic resin is No. II heat-resistant phenolic resin, the ethylene glycol ethyl ether acetate is industrial grade CAC111-15-9 ethylene glycol ethyl ether acetate, the polytetrafluoroethylene is LUB5 polytetrafluoroethylene, the bentonite is MP100 organic bentonite, the polyamide wax liquid variable auxiliary agent is a polyethylene wax liquid variable auxiliary agent, and the leveling auxiliary agent is a 3270 leveling agent.
The fifth concrete embodiment:
the corrosion-resistant lubricating coating for the dissimilar metal connecting piece for the metal composite structure is characterized by comprising the following material components in parts by weight: 3000 parts of molybdenum disulfide, 5500 parts of heat-resistant phenolic resin, 5000 parts of ethylene glycol monoethyl ether acetate, 150 parts of polyamide wax liquid change additive, 40 parts of bentonite and 20 parts of leveling additive.
The molybdenum disulfide is 1000 mesh powder molybdenum disulfide, the heat-resistant phenolic resin is 284 heat-resistant phenolic resin, the ethylene glycol ethyl ether acetate is industrial grade CAC111-15-9 ethylene glycol ethyl ether acetate, the polyamide wax liquid variable additive is a polyethylene wax liquid variable additive, the bentonite is MP100 organic bentonite, and the leveling additive is a 3270 leveling agent.
The invention provides a dissimilar metal connecting piece anticorrosive lubricating coating for a metal composite structure, which is used for testing the performance of the dissimilar metal connecting piece anticorrosive lubricating coating, and the test result is as follows:
the coating is liquid, and the coating mode is spraying and centrifugal top coating. The coating has no defect after coating, and the coating thickness can reach less than 10 microns and is uniform.
Resistance to paint stripper: and (3) soaking the coated fastener in a paint remover for 24 hours at room temperature, wherein the coating binding force and the coating hardness meet the requirements.
Under the condition that the thickness of the anti-corrosion lubricating coating is 8 microns, a neutral salt spray test is carried out for 240 hours, and no rust spot is generated.
Curing at 180-240 deg.c for 30-60 min.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, that the preferred embodiments of the present invention are described above and the present invention is not limited to the preferred embodiments, and that various changes and modifications may be made without departing from the spirit and scope of the present invention and these changes and modifications are within the scope of the invention as claimed.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The corrosion-resistant lubricating coating for the dissimilar metal connecting piece for the metal composite structure is characterized by comprising the following material components in parts by weight: 2000-4000 parts of molybdenum disulfide, 0-180 parts of strontium chromate, 2000-6000 parts of heat-resistant phenolic resin, 4000-5000 parts of ethylene glycol ethyl ether acetate, 0-200 parts of polytetrafluoroethylene, 30-50 parts of bentonite, 100-150 parts of polyamide wax liquid modifier and 10-30 parts of leveling additive.
2. The dissimilar metal connecting member anticorrosive lubricating coating for the metal composite structure according to claim 1, wherein the molybdenum disulfide is 1000-mesh powder molybdenum disulfide.
3. The corrosion-resistant lubricating coating for the dissimilar metal connecting member for the metal composite structure according to claim 1, wherein the strontium chromate is industrial pigment-grade strontium chromate powder with fineness of not less than 600 meshes.
4. The corrosion-resistant lubricating coating for a dissimilar metal connecting member for a metal composite structure according to claim 1, wherein the heat-resistant phenolic resin is a No. ii heat-resistant phenolic resin, a 284 phenolic resin or a 881 phenolic resin.
5. The corrosion-resistant lubricating coating for the dissimilar metal connecting piece for the metal composite structure as claimed in claim 1, wherein the ethylene glycol monoethyl ether acetate is industrial-grade CAC111-15-9 ethylene glycol monoethyl ether acetate.
6. The corrosion-resistant lubricating coating for the dissimilar metal connecting member for the metal composite structure according to claim 1, wherein the polytetrafluoroethylene is LUB5 polytetrafluoroethylene.
7. The corrosion-resistant lubricating coating for the dissimilar metal connecting member for the metal composite structure according to claim 1, wherein the bentonite is MP100 organic bentonite.
8. The corrosion-resistant lubricating coating for the dissimilar metal connecting member for the metal composite structure according to claim 1, wherein the polyamide wax liquid transformation aid is 229 wax liquid transformation aid or polyethylene wax liquid transformation aid.
9. The dissimilar metal connector anticorrosive lubricating coating for metal composite structures according to claim 1, wherein the leveling aid is a 3270 leveling agent or a HX-3310 leveling agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810727942.8A CN110684424A (en) | 2018-07-05 | 2018-07-05 | Anticorrosive lubricating coating for dissimilar metal connecting piece for metal composite structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810727942.8A CN110684424A (en) | 2018-07-05 | 2018-07-05 | Anticorrosive lubricating coating for dissimilar metal connecting piece for metal composite structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110684424A true CN110684424A (en) | 2020-01-14 |
Family
ID=69107233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810727942.8A Pending CN110684424A (en) | 2018-07-05 | 2018-07-05 | Anticorrosive lubricating coating for dissimilar metal connecting piece for metal composite structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110684424A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112143301A (en) * | 2020-03-31 | 2020-12-29 | 北京博研中能科技有限公司 | Thermosetting corrosion-resistant wear-resistant coating material and preparation and use methods thereof |
| CN114437592A (en) * | 2020-11-04 | 2022-05-06 | 中国石油化工股份有限公司 | Acid-resistant paint, preparation method thereof and metal corrosion and acid resistant method |
| CN115851073A (en) * | 2022-11-23 | 2023-03-28 | 中国科学院兰州化学物理研究所 | Quick-response self-lubricating wear-resistant coating, solid self-lubricating wear-resistant coating and application thereof |
-
2018
- 2018-07-05 CN CN201810727942.8A patent/CN110684424A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 徐良: "航空钛合金紧固件铝涂层性能规范研究", 《航空标准化与质量》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112143301A (en) * | 2020-03-31 | 2020-12-29 | 北京博研中能科技有限公司 | Thermosetting corrosion-resistant wear-resistant coating material and preparation and use methods thereof |
| CN114437592A (en) * | 2020-11-04 | 2022-05-06 | 中国石油化工股份有限公司 | Acid-resistant paint, preparation method thereof and metal corrosion and acid resistant method |
| CN114437592B (en) * | 2020-11-04 | 2023-05-30 | 中国石油化工股份有限公司 | Acid-resistant coating and preparation method thereof, and metal corrosion-resistant acid-resistant method |
| CN115851073A (en) * | 2022-11-23 | 2023-03-28 | 中国科学院兰州化学物理研究所 | Quick-response self-lubricating wear-resistant coating, solid self-lubricating wear-resistant coating and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI423881B (en) | Antifriction coatings, methods of producing such coatings and articles including such coatings | |
| CA3064359C (en) | Threaded connection for pipes or tubes and method for producing the threaded connection for pipes or tubes | |
| CN110651147B (en) | Threaded joint for pipe and method for manufacturing threaded joint for pipe | |
| CA3009607C (en) | Threaded connection for pipe or tube and method of producing the threaded connection for pipe or tube | |
| CA3008781C (en) | Threaded connection for pipe or tube and method for producing the threaded connection for pipe or tube | |
| JP5560390B2 (en) | Antirust coating | |
| JP2015057479A (en) | Anticorrosive and low-friction coated film | |
| CN110684424A (en) | Anticorrosive lubricating coating for dissimilar metal connecting piece for metal composite structure | |
| EA035552B1 (en) | Threaded tubular element provided with a metallic anti-corrosion and anti-galling coating | |
| JP5572875B2 (en) | Antirust coating | |
| JP2016169797A (en) | Metal gasket material plate and manufacturing method thereof | |
| CN110684423A (en) | Titanium alloy connecting piece anticorrosive aluminum coating for aluminum alloy composite structure | |
| CN110741108B (en) | Threaded joint for oil well pipe and method for manufacturing threaded joint for oil well pipe | |
| Ma | An experimental study on factors affecting the friction coefficients in electroplated bolts | |
| WO2020149310A1 (en) | Threaded joint for pipes and method for manufacturing threaded joint for pipes | |
| JP2018123831A (en) | Screw joint for pipe and manufacturing method of screw joint for pipe | |
| JP3847926B2 (en) | Steel plate for high corrosion resistant fuel tank | |
| JP2006083464A (en) | Rust-preventive metallic component, and its manufacturing method | |
| Svoboda et al. | Alternative methods of chemical pre-treatment on hot-dip galvanization surface for adhesion organic coatings | |
| OA19360A (en) | Threaded joint for pipe and method for producing threaded joint for pipe. | |
| JPH0657442A (en) | Lubricant plated steel sheet excellent in gnawing resistance, heat resistance and sliding wear resistance | |
| JPH0234792A (en) | Chromated steel sheet having superior lubricity and superior corrosion resistance after working | |
| JP2006137993A (en) | Aluminum based member, method for producing the same and surface treatment method for aluminum based member | |
| JPH0741962A (en) | Lubricating resin-treated steel sheet excellent in press forming property and corrosion resistance | |
| JPH08156174A (en) | Highly lubricant organic resin-coated steel panel excellent in weldability |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |